   ICollection
   (-conj [coll entry] (-assoc coll (-nth entry 0) (-nth entry 1)))
 
-; IEmptyableCollection
-; (iempty [coll] coll)
+  IEmptyableCollection
+  (-iempty [coll] coll)
 
   IEquiv
   (-equiv [coll other] (equiv-map coll other))

  ICollection
  (-conj [coll o] (Cons. nil o coll))

; IEmptyableCollection
; (iempty [coll] List.EMPTY)

  ISequential
  IEquiv

  ICollection
  (-conj [coll o] (List. meta o coll (inc count)))

  IEmptyableCollection
  (-iempty [coll] coll)

  ISequential
  IEquiv
